Results 1 to 10 of about 69,413 (120)

Characteristics, causes, and prevention measures of coal mine water hazard accidents in China

Meitan kexue jishu, 2023
As one of the top “five major hazards” in coal mines, water hazards have become the second leading cause of danger for coal mine safety and worker lives, next only to gas accidents.
Yifan ZENG, Qiang WU, Suqi ZHAO, Yaowu MIAO, Ye ZHANG, Aoshuang MEI, Shihao MENG, Xiaoxiu LIU   +7 more
doaj   +1 more source

Effect of Terrigenous Sediment Addition on the Generation of Arc Silicic Magma: Constraints From the Comparative Partial Melting Experiment at 1.5 GPa

Frontiers in Earth Science, 2022
To assess the effects of sediment addition on the partial melting of subducted oceanic crust and generation of arc silicic magma, a series of comparative partial melting experiments on a garnet plagioamphibolite and a 90 wt% garnet plagioamphibolite + 10 
Chunjuan Zang, Chunjuan Zang, Chunjuan Zang, Mingliang Wang, Mingliang Wang, Mingliang Wang   +5 more
doaj   +1 more source

Experimental investigation on grout propagation in poured aggregates for controlling water inrush in tunnels with flowing water

Geoenvironmental Disasters, 2023
Background In recent years, the technology of blocking and grouting of has been widely used in the treatment of groundwater inrush in tunnels in China’s mines. Studies have been carried out on the aggregates pouring under hydrodynamic conditions; however,
Wanghua Sui, Zongyuan Liu, Gailing Zhang, Deguang Mao, Ruijian Li, Jinxi Liang   +5 more
doaj   +1 more source

Contamination and human health risk assessment of heavy metal(loid)s in topsoil and groundwater around mining and dressing factories in Chifeng, North China

International Journal of Coal Science & Technology, 2023
Highlights (1) Quantified the level of heavy metal(loid) pollution around the metal ore processing, mining and smelting factories in Chifeng. (2) Heavy metal(loid) risks were assessed based on optimized ecological and health risk model. (3) Cd, As and Pb
Di Zhao, Qiang Wu, Yifan Zeng, Juan Zhang, Aoshuang Mei, Xiaohui Zhang, Shuai Gao, Hanyuan Wang, Honglei Liu, Yong Zhang, Shuai Qi, Xu Jia   +11 more
doaj   +1 more source

Microbial community characteristics of deep groundwater in Huaibei coalfield and its significance in water source tracing

Meitan xuebao, 2023
The natural balance system of deep groundwater is disturbed by coal mining and drainage depressurization, leading to temporal and spatial changes in microbial communities in different aquifers.
Jiayu CHEN, Herong GUI, Yan GUO, Jun LI
doaj   +1 more source

Environmental geochemical baseline determination and pollution assessment of heavy metals in farmland soil of typical coal-based cities: A case study of Suzhou City in Anhui Province, China

Heliyon, 2023
Soil is the foundation of agricultural green development and human survival; the study of local environmental geochemical baselines can guide soil management and ensure the safe use of soil.
Jun Zhang, Weihua Peng, Manli Lin, Congmin Liu, Song Chen, Xiaojun Wang, Herong Gui   +6 more
doaj   +1 more source

Mechanism of Instantaneous High-Strength Sand–Water Inrush in Steeply Inclined Mining of Soft Coal Seam under Disturbed Rock–Soil Overburden [PDF]

Lithosphere
Water and sand inrush pose significant threats to underground geotechnical engineering, including shallow buried resource extraction and tunnel construction.
Yifan Zeng, Donghui Yang, Qiang Wu, Yashuai Cui, Zeyang Liu   +4 more
doaj   +1 more source

Analysis of influence factors on rock quality designation and core recovery percentage

矿业科学学报, 2017
Rock quality designation(RQD) and core recovery percentage are indispensable parameters in water bursting evaluation.However, in the past works, the borehole data were often recorded in accordance with drilling records,but the study of its regularity was
Li Zhe, Wang Yang, Liu Shouqiang, Zeng Yifan, Niu Pengkun, Gong Houjian   +5 more
doaj   +1 more source

On-Site Monitoring for the Stability Evaluation of a Highway Tunnel above Goaves of Multi-Layer Coal Seams

Applied Sciences, 2021
This paper presents the on-site monitoring of a medium–long highway tunnel constructed above a goaf of a multi-layer coal seam, in order to evaluate and maintain safety during operation.
Guangtao Cai, Wanghua Sui, Shenglin Wu, Jilin Wang, Jiaxing Chen   +4 more
doaj   +1 more source

Multiscale damage evolution and chemo-mechanical constitutive modeling of acid-corroded sandstone

iScience
Summary: This study investigated time-dependent chemo-mechanical deterioration of fine-grained sandstone exposed to dilute sulfuric acid representing the proton-sulfate component of acid mine drainage.
Li Hao, Zeng Yifan, Wu Qiang, Cheng Yifan, Yang Donghui   +4 more
doaj   +1 more source